Traffic St Mary Hill

Cities
St Mary Hill
ADD A ROAD
Nearby: BridgendWickPorthPontypriddBarryCardiff

SLIGHT

SEVERE

FULL SCREEN UPDATED: 15:33

Current traffic around St Mary Hill

The following traffic incidents and congestion for St Mary Hill have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:

CORYTON TO NANTGARW

Description: A470NorthboundCoryton to NantgarwCongestionDelay: s possible :, Start time: 15/12/2025 15:19 , Expected end time: 15/12/2025 19:19, Severity: Moderate, Source: Welsh Government, Last updated: 15/12/2025 15:19
Nearest town: 10.8 miles from St Mary Hill.

J32 CORYTON

Description: M4EastboundJ32 (Cardiff) CorytonoffslipCongestionDelay: s possible :, Start time: 15/12/2025 15:19 , Expected end time: 15/12/2025 19:19, Severity: Moderate, Source: Welsh Government, Last updated: 15/12/2025 15:19
Nearest town: 11.18 miles from St Mary Hill.

J37 PYLE TO J39 GROES

Description: M4WestboundJ37 (Porthcawl) Pyle to J39 Groes14/12/25-19/12/25 2000-0600Maintenance workClosedDiversions in place :, Start time: 14/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 14/12/2025 20:00
Nearest town: 10.33 miles from St Mary Hill. CLEARED @ 12:42

J32 CORYTON

Description: M4WestboundJ32 (Cardiff) Coryton17/12/25-19/12/25 2000-0600Maintenance workOnslip closedDiversions in place :, Start time: 17/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 12:19
Nearest town: 11.18 miles from St Mary Hill. CLEARED @ 12:42

J38 MARGAM TO J37 PYLE

Description: M4EastboundJ38 (Port Talbot) Margam to J37 (Porthcawl) Pyle14/12/25-19/12/25 2000-0600Maintenance workClosedDiversions in place :, Start time: 14/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 14/12/2025 20:00
Nearest town: 10.14 miles from St Mary Hill. CLEARED @ 12:30

TAFF'S WELL

Description: A470NorthboundTaffs Well15/12/25-16/12/25 2000-0600Maintenance workEntry slip road closedDiversions in place :, Start time: 15/12/2025 20:00 , End Date: 16/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:42
Nearest town: 10.78 miles from St Mary Hill. CLEARED @ 12:18

UPPER BOAT

Description: A470NorthboundUpper Boat18/12/25-20/12/25 2000-0600Maintenance workEntry slip road closedDiversions in place :, Start time: 18/12/2025 20:00 , End Date: 20/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:45
Nearest town: 10.78 miles from St Mary Hill. CLEARED @ 12:18

UPPER BOAT

Description: A470NorthboundUpper Boat18/12/25-19/12/25 2000-0600Maintenance workExit slip road closedDiversions in place :, Start time: 18/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:48
Nearest town: 10.78 miles from St Mary Hill. CLEARED @ 12:18

M4 J33 CAPEL LLANILLTERN

Description: A4232EastboundM4 J33 Capel Llanilltern11/12/25-19/12/25 2000-0600Maintenance workExit slip road closedDiversions in place :, Start time: 11/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:38
Nearest town: 8.24 miles from St Mary Hill. CLEARED @ 11:54

J30 CARDIFF GATE TO J49 PONT ABRAHAM

Description: M4Both directionsJ30 (Cardiff) Cardiff Gate to J49 Pont AbrahamSpeed restrictions Due to Poor driving conditions :, Start time: 15/12/2025 6:04 , Expected end time: 15/12/2025 16:00, Severity: Slight, Source: Welsh Government, Last updated: 15/12/2025 6:04
Nearest town: 8.3 miles from St Mary Hill. CLEARED @ 10:54

There are no current incidents in this location.

Roadworks

Traffic in Nearby Villages

Graig Penllyn (0.88mi)
Ruthin (0.88mi)
Llangan (0.88mi)
City (1.24mi)
Treoes (1.24mi)
Penllyn (1.39mi)
Waterton (1.86mi)
Pentre Meyrick (1.86mi)
Coychurch (1.96mi)
Ton Breigam (1.96mi)
Llansannor (1.96mi)
Pencoed (1.96mi)
Felindre (1.96mi)
Shelf (2.24mi)
Pen y lan (2.24mi)
Colwinston (2.24mi)
Llysworney (2.48mi)
Penprysg (2.48mi)
Brackla (Bragle) (2.56mi)
Bragle (Brackla) (2.56mi)
Degar (2.56mi)
Brynnau Gwynion (2.56mi)
Llanharry (2.77mi)
Trerhyngyll (2.77mi)

St Mary Hill

Let's Get Social

Get in touch with us or stay up to date with our latest news and updates.

Live Email Traffic Alerts

Get live email alerts whenever there is a traffic incident or roadworks on the on the roads you travel that may cause congestion or jams.

LEGAL NOTICE

Please remember that it is against the law to use your mobile phone, tablet or any electronic device without a hands-free kit whilst driving. If you're caught by the police using any device that can send or receive data whilst driving or riding a motorcyle you'll get an automatic fixed penalty notice, 6 points on your licence and a fine of £200. A court could also disqualify you from driving.

Elsewhere on the web:

National Highways England

Official source of traffic updates.

Transport for London (TFL)

Transport for London's (TfL) portal for transportation in London.

Traffic Wales

The Welsh government's traffic information service for Wales.

Traffic Scotland

Live traffic conditions and news for Scotland's road network.

YOUR AD HERE

Advertise to millions of motorists, holidaymakers and commuters.

Description: A470 : Northbound : Coryton to Nantgarw : Congestion : Delays possible :, Start time: 15/12/2025 15:19 , Expected end time: 15/12/2025 19:19, Severity: Moderate, Source: Welsh Government, Last updated: 15/12/2025 15:19
Nearest town: 10.8 miles from St Mary Hill.

51.54--3.26

Description: M4 : Eastbound : J32 (Cardiff) Coryton : offslip : Congestion : Delays possible :, Start time: 15/12/2025 15:19 , Expected end time: 15/12/2025 19:19, Severity: Moderate, Source: Welsh Government, Last updated: 15/12/2025 15:19
Nearest town: 11.18 miles from St Mary Hill.

51.53--3.25

Description: M4 : Westbound : J37 (Porthcawl) Pyle to J39 Groes : 14/12/25-19/12/25 2000-0600 : Maintenance work : Closed : Diversions in place :, Start time: 14/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 14/12/2025 20:00
Nearest town: 10.33 miles from St Mary Hill.

51.54--3.73

Description: M4 : Westbound : J32 (Cardiff) Coryton : 17/12/25-19/12/25 2000-0600 : Maintenance work : Onslip closed : Diversions in place :, Start time: 17/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 12:19
Nearest town: 11.18 miles from St Mary Hill.

51.53--3.25

Description: M4 : Eastbound : J38 (Port Talbot) Margam to J37 (Porthcawl) Pyle : 14/12/25-19/12/25 2000-0600 : Maintenance work : Closed : Diversions in place :, Start time: 14/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 14/12/2025 20:00
Nearest town: 10.14 miles from St Mary Hill.

51.53--3.73

Description: A470 : Northbound : Taffs Well : 15/12/25-16/12/25 2000-0600 : Maintenance work : Entry slip road closed : Diversions in place :, Start time: 15/12/2025 20:00 , End Date: 16/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:42
Nearest town: 10.78 miles from St Mary Hill.

51.54--3.26

Description: A470 : Northbound : Upper Boat : 18/12/25-20/12/25 2000-0600 : Maintenance work : Entry slip road closed : Diversions in place :, Start time: 18/12/2025 20:00 , End Date: 20/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:45
Nearest town: 10.78 miles from St Mary Hill.

51.58--3.29

Description: A470 : Northbound : Upper Boat : 18/12/25-19/12/25 2000-0600 : Maintenance work : Exit slip road closed : Diversions in place :, Start time: 18/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:48
Nearest town: 10.78 miles from St Mary Hill.

51.58--3.29

Description: A4232 : Eastbound : M4 J33 Capel Llanilltern : 11/12/25-19/12/25 2000-0600 : Maintenance work : Exit slip road closed : Diversions in place :, Start time: 11/12/2025 20:00 , End Date: 19/12/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 13/12/2025 11:38
Nearest town: 8.24 miles from St Mary Hill.

51.51--3.31

Description: M4 : Both directions : J30 (Cardiff) Cardiff Gate to J49 Pont Abraham : Speed restrictions Due to Poor driving conditions :, Start time: 15/12/2025 6:04 , Expected end time: 15/12/2025 16:00, Severity: Slight, Source: Welsh Government, Last updated: 15/12/2025 6:04
Nearest town: 8.3 miles from St Mary Hill.

51.52--3.69

Except where otherwise noted, content and photographs on this site are licensed under a Creative Commons Attribution 3.0 License.
Owned, operated and copyright CliqTo Ltd 2025 and Chris Haycock. Registered company number 7575287.

Radio Jingle by Oleg Fedak from Pixabay D&B Business Listing